Catalytic mixer



De@ 1931. D. BALAcHowsKY ET AL 1,834,818

v CATALYTIC MIXER Filed July so, 192s Patented Dec. 1, 1931 UNITED4STATES PATENT OFFICE DMITRY IBALACHOWSKY, PHILIPPE CAIRE, AND MANS LVY,OIF PARIS, FRANCE,

d ASSIG-NORS TO SOCIETE DES BREVETS CATALLEX, *F PARIS, FRANCE CATALYTICMIXER Application liiled July 30, 1929, Serial No. 382,141, and inFrance August 3, 1928.

This invention relates to improvements in such devices as will cause'the catalytic decomposition or cracking of light and heavy hydrocarbonsand are mainly but not excluif. sively intended for use in motorvehicles with the purpose of feeding with heavy hydrocarbons.

` Y In' order `that the invention may more ready obtained.

vilybe understood, it will now be further described vwith the aid of theaccompanying drawings wherein the .device providing the subject matterof the invention is shown by way of example.

In the drawings Figure, 1 is an elevation partly in section of acatalyzer whereb the catalytic decomposition of heavy or 1i hthydrocarbons may be Figure 2 is a cross section at right angles to Fig.1` taken on lineQ-Q of Fig. 1.

F Figure 3 isa plan view corresponding to ig. 1. l As shown in thesefigures, 1 designates a constant-level cup` one feature of which'resides in its being' provided with a fioat vin whichV a partial vacuumhas been created to enable it 'to resist the internal Vexpansionresulting from 'the action of the heat radiated by the power set.

This constant-level cup communicates through the duct 2 with thespray-emulsifier indicated at 3 in 2. The primary air arrives at 3through duct 19 and, under the suction set up by the engine or theaction produced by a pump circulating the carbureted mixture, thehydrocarbon is drawn in and drives along the air arriving at 3, thecarbureted air, which is atrue emulsion of liquid hydrocarbon land air,Ibeing distributed through a rack 4 at the bottom of the catalyzingblock.

The catalyzingblock consists of a mass of copper or any otheroxidation-promoting ma terial; the block being formed with two'series ofcast or ous grooves '5; Y l

. The first series of grooves, which extends on the ,front face ofthecatalyzing block and can be seen in Fig. 1 wherein the heat insulatinglid 14 is omitted, serves as a path for punched longitudinal sinuthemixture of primary air and fuel fed from the emulsier 3, 4.

The second series, which extends at the rear of the catalyzing block at20, is heated by the flow of exhaust gases which is passed therethrough,eventually in combination with any As already mentioned, the block isclosed at the front part thereof by a heat-'insulating lid 14 boltedthereto or secured in any other suitable manner. Located at 9 at the toppart of the catalyzing block is a duct by which the secondary air is ledin, an adjusting throttle being incorporated in said duct.- Thecatalyzed mixture issuing from the catalyzing block arrives in the upperVenturi tube or mixing element 6 and becomes mixed withl the secondaryair led in through the duct 9 and the whole mixture is fed tothe enginethrough the manifold 16. l l y The valve 7 which communicates with thesecondary air supply ductand is controlled through a spring 8 allowsadditional air to be introduced automatically into the mixture when thesuction created bythe .engine happens to exceedl a given limit. Theexhaust gases from the engine arrive through the manifofd 17 at the rearofthe catalyzing block; opening the throttle 13 will allow them todirectly proceed towards the exhaust gas orifice 15. When the throttleis fully closed, as shown in Fig. 2, the exhaust gases must flow overthe partition 20 so that they come into contact with the blades beforeentering thel exhaust duct 15. f

The amount of'exhaust gases fiowingpast the'blades will be more or lessconsiderable depending on how much the throttlc is open. Thisarrangement thus allows the temperature in the catalzyer to be adjustedat will. As already mentioned, the rear part of the catalyzer, that is,that part thereof provided quently, a catalysis of these exhaust gaseswill take place whereby the deleterious action of said .gases isdestroyed, particularly on account of the carbon monoxide therein beingconverted into carbon dioxide.

The operating means for the shutter 11 controlling the amount of mixturefed to the engine is connected to the throttle 13 for the exhaust gasesthrough a rod 12 so that both shutters may be opened or closedsimultaneously. l

A branch pipe leading` from the exhaust pipe into the pipe 19 throughwhich the primary air is fed into the emulsifier 3, 4 may 15 be providedin 4order to allow anradjustable amount of exhaust gases to beintroduced into the initial mixture submitted to catalysis. Such exhaustgas admixture is intended to cause in the explosive mixture a reactionwhereby a mixture is obtained which will give rise to a satisfactoryexplosion and cause the engine to work properly.

We claim as our invention:

A catalytic mixer for effecting catalytic =decomposition of heavyhydrocarbons in motors, comprising a catalyzing block formed with aseries of sin'uous channels through which a mixture of fuel and primaryair is caused to ascend; blades on said block; means 3U for circulatingexhaust gases through the -rear part of the block in contact with saidblades to heat said gases; a Venturi tube in which the catalyzed mixtureis mixed with secondary air; and means for admitting ad- 35 ditionalair. i

In testimony whereof, we aflix our signai tures.

MANS LEVY. PHILIPPE CAIRE.

v 40 DMITRY BALACHOWSKY.

on' y

